The driver of a vehicle intending to join the flow of traffic is required to...
A)always follow the instructions of another person.
B)use the indicator signal only.
C)make sure beforehand that they can do so without danger.Correct
The driver of a vehicle stopped or parked on a road, or coming from access roads to it, from its service areas or from an adjoining property, or from an exclusively private road, who intends to join the flow of traffic, must first make sure, even by following the instructions of another person if necessary, that they can do so without danger to other road users, yielding right of way to other vehicles and taking into account their position, trajectory and speed, and shall signal this with the mandatory signals for such cases.